Resilient tire



D. A. GARDEN.

RESILIENT TIRE.

APPLlcATIoN FILED Nov. 12, 1921.

Patented Aug. l, 1922.

I/vx/.EN-roe D. f4. Gara/en.

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stares :DAVID A. GARDEN. or sfr. Leurs, Mrssonnr.

raeaaes.

ensrrirnn'r, Tran.

f "EgatentedAnovi;1922i Application inea Nevembei 1a, 1921. *serialv N. 514,655.

exact description. such. as will enable others skilled in the art to which it appertains to make and use the same. p p

rllhis invention relates to vresilient tires ot ,the type which comprise `coiled springs ar-A ranged between a jointed tread portion and al rigid rim that surroundsjthe telloe of the wheel on which `the tirefis used.V

.The main obi ect of the invention is to provide a practicable tire of the general chai'- acterrelterred tothat is capable of successfully withstanding; the terrific side stresses to which vehicle tires are subjected when in sel."-

ViCB. i .i f f, a

Another object is to provide a spring tire in which the tread portion Lis rugged enough to forni an efficient tread for a tire that is intended to be subjected to`V heavy-loadsibut has' sufficient flexibility to permit `the springs to absorb the shocks produced by irregularitiesv or obstructioi'is lin the road over which the 'tire' travels. f

And stillanother object is to provide an efficient spring tire of simple 'design which is so constructed-that it can be applied to and removed from a vehicle wheel in the same manner as the demountable'rirns now universally used tor holdingrpneuinatic tires on wheels. f y

Figure 1 of the drawings is a? top plan view, part-ly broken away of a portion of iny improved spring tire.. y

Figure Z isa view ot said tire partly in' lon 'tudinal section and in sidefelevation. .i ignre 3 is av transverse sectional view? taken on the line 3-3 #Figure 2.

Figure i is aside elevational viewt illustrating `the 'resilient bands :through which the ycoiled springs A'are threaded.

Figure 5 is a top plan viewofione olf said bands.; and 1 Figure 6 is a cross-Sectional'viewsiinilar to Figure il listrating a'slifrht modifica',- tion of :inyfinventi'on Referring tothe drawings which illustrate the preterred iorm otinv invention, A desir?- naftes' 'plurality ot' coiledl springs that are arranged between' a rigidrini B and a jointed tread portion composed of a plurality or' segmental-shapedf'members C arranged 1n overlapping relation with eachk other and combined in such a way that they can move relatively` to each other, when' themtire is in' service. T he rini B, is intended to be reiiiovably inountedon a wheel (notshown) land retained in position thereon by any orn thel various nieans now universally used :tor se'.-`

curing; demountable finis vsuch as are used for carrying pneumatic tires. rPhe springs are preferably arranged .in staggered relation, as shown 1n Figure l, and are combined with the segmental-shaped inenibers C constitut.`

ing; the tread portion'ot the tirey in such a Q manner that a pair of springs .A isas'sociated with `each oi the tread members Cysaid `spriirogs beinef connected .at their inner ends to the rini B and at their outer ends to the tread members C. ln the form ot invention herein illustrated eachr oitl the springs .f A.' hasr itsy inner endf1connectedlto a lug l on the outer side ofthe rnn B and is provided at its `outer end with aneye'. The springs or each pairfare so arranged-that the eyes 2 at the outer ends of the springs of a pair. are i arranged in transverse alignmentifas shown in Figure l. thus permittinga transversely-- disposed pin 3 to be passed` through said eyes andvtl'irough luzqor portion l on the inner si de ot the tread member @with which said pair oi springs co--operatesoas to pivlotally ,connect said. springs-and tread rneni- 1Per together.

1 Preterably the eyes i on the spr-ings A ot each pau.' are arranged in` slots orvgrooves Ain kthe portion tot the treadwniernber with y whiclrsaid pair .of springs AClo-operate as shown in Figure 3, Iandthe transversely-dis-.

, posed pin 3 that connects the. springs to the portion If y the treadfrnernber is provided at oneend .with an externallyv screw-threaded portion that is screwed into an internally screw-threaded hole in the'portioni and provided at its opposite end with a screw driver. slot 3b orsimilar `means soi-as to facilitate the insertion and removal ofthe pin 3. Then the springs A and treadmernbers C are combined together in this manner each of the tread members -C will be pivotally connected intermediate its-,ends to a pair ,of coiled springs whose inner ends are connected to l iin which surrounds the telloe otpthe wheel. The particular shape of the tread y members G `is immaterial, so ftar as my broad idea is concerned, but l prefer to makelthe tread members C of suchl form that they will lap over each other, as illustrated in Figure 2. Thus, in the form of my inventionherein illustrated each oi the treadmembers C'is v saine areI tiedtogether by a means `that extends ciroumferentially around the tire and which is so constructed that it will hold the tread members C in operative relationship with each other, hut will'permit said menihers to rock and also move inwardly and outwardlya limited distance with relaiion to the rimv B of the tire. j

The means just referred to thai/l j ireer.

to use consists offa series of short. segmen-v tal-shaped links 7 arranged circumferentially around the tire withl their ends in overylapped relation,l as lshown in Figure l', and

provided with holesfthroug'h which the trans` versely-disposed pins pass, thus causingv the links 7` toghe pivotally connected together 'and also pivotally connected to the pairs of springs 'Av withfwhich the tread which'Iy will refer toas a locking pin, is prof slots 8 previously referred to,'aiid the linker? members C are associated. ln order tovlo'ck the pins 3 in the tread members C and also prevent the links- 7 from 'movingl trans` versely with relationto said pina'ea'eh of` the pins 3, with the exceptionfot one pin vided at kits center with a fiat portion 8C, as shownin Figure 3, that is rseated in elongated slots'8 yin the overlapped portions of the two links'7 with lwhich said pin co-operates; In assembling the .parts oi' the tire, the

pins 3, with the exception ofthe lockingpinI above referred to, are passed transversely through alignedl circular holes 8a in the links 7 that form continuations oi the elongated are then moved c ircumferentially of thetire in'a direction'tocause the flat'portions 3C of the'pins Sto be" positioned in the elongzjeted slotsB in the llinlrs 7, thus causing the pins 3 toybe locked inthe tread members C and the links'i" todae held securely against side wise movement. Thereafter, the locking pin,` which is not provided with a flat por; tionfc, 1s arranged inoperative 'position in thetread member C With which it coop crates,` said loclring pin operating to Aprevent the links 7 from'moving ciroumtefren4 'tially/in'pthe opposite direction, or, in other words,` inra' ydirection. to cause ther flat portions 3C on'the pins 3 to pass'out of engage;

ment with y links 7. f

:In ordei'to tak-e up the sidestresses to they elongated lslots i 8 iny the which'the tread portion of the tire is'sub# jected 'when the ti relis in service, a plurality of :circular orring-shaped, l'lexible hands are arranged between the rim B and the tread members and combined with the springs A in such a way that the tread mem-y bers C are effectively. heldin approximate alignment with the-rim vB ot thevtire. The bands D, which can be formed conveniently 'from flat stripsof spring` steel, are arranged one'withinthe other and are spaced apart, as shown in Figure 2, and they are provided with holes or openings 9 .ot such i'orin that tho springs A can be threaded through'saine,

thus 'permitting the bands D to occupy sulfstantially the position shown in Figure 2, Vlf'vhen the' whenthe tire is not in motion. tue-is traveling over a. road the bands .D

away from 'the rim B oi' the tire the .springs A compress and'expaiid, but they effectively prevent the springs A. tron. moving sidewjse, or rather, they limit the side# wise.' movement ofthe vtread portion of the tire'owing to the'faot that all oi the springs' A ot thev tire Aare threaded lthropugh s nl hands in such a way thatthe springs A at one side 'of the tire, jfor example, the upper* side, `which are not subjected to excessive' side strains hold the bands D so securely that said bands Iare capable of resistinefthe f-ixffessivel side stresses tof'which the springs vA at the lower sideof the tire are subjected. ll/ThenV ordinary straight, coiled springs Aol 'the form shown ini Figure 3`are` used` itis preferable' to provide thewbands. with 'sub-` stantially arcLsh'aped holes, as shown in Fig@ vure 5, so as ltol facilitate. thev threading,` `of said springs through the-bands D, but de sired, the tirey can be `equipped with si-)rings A oit thejform Vsho-wn in Figure 6 whose coils or convolutins-are connected .togethen -bystraie vt portions 10. VVhensuch springs areused the bands D can simply be provided with circular'holes for receiving thestiaiight* portions l0 of the springs A.

'80 ileiinwardly and outwardly towards and A resilient tire of the'oonstruotion above j descrihedis adm irably adapted for use 'on truclis' and other power operated vehicles that are intended to he used foritransportingheavy loadsowing` to'theftact that the 'lexil ble bands Dthroughwhioh the springs A are threaded effectively limit the side sway of the spring'zs'A., and thus prevent the tire from collapsing jor being destroyed when it is subjected `to excessive' side thrusts. vThe tread portion ot' the 'tireis rugged `enough to enablethe tirev to be' used Jfor carrying heavy loadsover rough roads, but ithas sufficient flexibility to'insure the sprii'ifrslei.

functioningy properly, and thus absorbing the shocks and jolts producedv byinequalities `or obstructions in the road over which` the tire travels. ln addition to the desirable features above pointed out, 'my improved tire is inexpensive to-manutacture and-.it is ol" such vsimple Ydesign that it is not 'apt to get out oit order when -ln service..- l

l. A spring tire, comprising a jointedk tread portion. that surrounds a rim, coiled springs interposed between said rim and tread portion, and a flexible band arranged between said rim and tread portion and having openings through which said coiled springs are threaded.

2. il. spring tire, coinprisinga circular llenible tread portion that surrounds a rim, coiled springs interposed between saidv rim' and tread portion throughout the entire cireinnterence of the tire, and a band ot spring steel or the like arranged between said rim read portion and combined with said l in such a way that it co-operates witAL the springs at one side of the tire to resist the side thrusts and stresses to which the springs at the other side of the tire are subjected when in service.

3. A spring tire, comprising a circular flexible tread portion that surrounds a rim, coiled springs interposed between said rim and tread portion throughout the cntirecircumterence of the tire, and band of spring steel or the like arranged between said rim and tread portion and combined with the springs in such a way that the side thrusts and stresses to which the springs at the lower side ot the tire are subjected when the tire is in service are resisted or overcome by the remainder ot the springs ot the tire.

Ll. A, spring tire, comprising a jointed tread portion that surrounds a rim, coiled springs arranged between said rim and tread portion, and a plurality of resilient bands arranged one within the other in the space between the rim and tread portion and hav ing holes in same through which said coiled springs extend.

5. A spring tire, comprising coiled springs projecting radi ally from a rim,atread portion composed ot a number of substantially segmental-shaped members arranged in overlapping relation, pivotal connections between said tread members and said springs, and means that extend circumiferentially o't the tire which holds said tread members in operative relationship with each other.

6. A sprinn tire, comprising coiled springs projecting radially 'from a rim, a tread portion composed of a number of substantially segmental-shaped members arranged in overlapping relation, pivotal connections between said tread members and said springs, means that extend circnmlierentially o' the tire which holds said tread members in operative relationship with each other. and a resilientband arranged between said rim and tread members and having openings through which said springs are threaded.

"i". A spring tire, comprising a tread por tion composed of a number of substantially segmntal-shaped members, coiled springs interposed between said tread portion and a rim, and a jointed structure extending cir cumferentially of the tire and connected to said springs and tread members.

8. A spring tire, comprising a tread portion composed of a number'of substantially segmental-shaped members, coiled springs interposedvbetween said tread portion and a "im, a jointed structure extending circum- :lerentially of the tire and connected to said springs and tread members, and a resilient band arranged between said rim and tread portion through which said springs are threaded.

9. A spring tire, comprising coiled springs projecting' radially from a rim and arranged in pairs, a tread member pivotally connected to each pair of springs in such :i way as to form a single unit, and means for tying the various units of the tire together.

10. A spring tire, comprising a tread portion composed of a plurality of segmental-shaped members arranged in overlapping relation, a set of coiled springs arranged between each of said tread members and a rim, means tor pivotally connect-ing each tread member to the set of springs with which it co-operates, and a jointed structure extending circumferentially around the tire that is pivotally connected to said tread members and to the various sets oi: springs of the tire. f

11. A spring tire, comprising a tread portion composed of a plurality of segmental-shaped members arranged in overlapping relation, a set of coiled springs arranged between eac-h of said tread members and a rim, means for pivotally connecting each tread member to the set of springs with which it co-operates, a jointed structure eX- tending circumterentially around the tire that is pivotally connected to said tread members and to the various sets of springs oie the tire, and a resilient band surrounding said rim and having' holes in same through which said springs pass.

12. A. spring tire, comprising a tread portion composed of a. plurality of substantially segmental-shaped members arranged in overlapping relation, coiled springs interposed between said tread members and a rim and arranged in staggered relation and in suc-h a way that each tread'member is associated with a pair of said springs, pintle pins that connect said tread members to the springs with which they coi-operate, and links arranged circumterentially of the tire and having holes in same through which said pintle pins pass.

13. A spring tire, comprising a tread portion composed of a plurality of substantially segmental-shaped members arranged in overlapping relation, coiled springs interposed between sad tread members and. a rim and arranged in staggered relation and in such a Wayy that each tread member 1s as soeiated with a pair of said springs, pintle.

pins that connect said tread members to the springs with which they cio-operate; and links arranged circumferentially oi? the tire and having holes in same through Which said pintle pins pass,l said links and pintle pins being so combined lthat the links lock the pintle pins in operative position and said pins prevent the links from-moving sidewise.

14. spring tire, comprising a tread portion composed of a number of members, each of which is provided at one end with an extension that laps over the adjacent tread member, sets of coiled springs interposed between said tread members and a rim and pivotally connected to said mem-v bers, a jointed structure extending circumferentially of the tire and combinedy with said tread members and sets of springs in such a Way that it limits the eireumferential movement of said tread members rela-v tively to each other, and a plurality of re silient bands arranged one Within the other.

means for 'limiting the circumferential movement of said tread members relatively to each other, and a resilient element arranged between said rim and tread members and having' holes in same through Which said springs extend.

DAVID A. GARDEN. 

